RecipeInfoCommand.php

<?php

declare (strict_types=1);
namespace Drupal\Core\Recipe;

use Drupal\Core\Command\BootableCommandTrait;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;

/**
 * Shows information about a particular recipe.
 *
 * @internal
 *   This API is experimental.
 */
final class RecipeInfoCommand extends Command {
    use BootableCommandTrait;
    public function __construct($class_loader) {
        parent::__construct('recipe:info');
        $this->classLoader = $class_loader;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function configure() : void {
        $this->setDescription('Shows information about a recipe.')
            ->addArgument('path', InputArgument::REQUIRED, 'The path to the recipe\'s folder');
    }
    
    /**
     * {@inheritdoc}
     */
    protected function execute(InputInterface $input, OutputInterface $output) : int {
        $io = new SymfonyStyle($input, $output);
        $recipe_path = $input->getArgument('path');
        if (!is_string($recipe_path) || !is_dir($recipe_path)) {
            $io->error(sprintf('The supplied path %s is not a directory', $recipe_path));
            return 1;
        }
        $this->boot();
        $recipe = Recipe::createFromDirectory($recipe_path);
        $io->section('Description');
        $io->text($recipe->description);
        $io->section('Inputs');
        $descriptions = $recipe->input
            ->describeAll();
        if ($descriptions) {
            // Passing NULL as the callable to array_map() makes it act like a Python
            // zip() operation.
            // @see https://docs.python.org/3.8/library/functions.html#zip
            $rows = array_map(NULL, array_keys($descriptions), $descriptions);
            $io->table([
                'Name',
                'Description',
            ], $rows);
        }
        else {
            $io->writeln("This recipe does not accept any input.");
        }
        return 0;
    }

}